Pilz PNOZ m B0 772100 Modular Safety Relay Controller with 24V AC/DC Operating Voltage and EN ISO 13849-1 PL e Certification

The Pilz PNOZ m B0 (part number 772100) is a configurable, modular safety controller from the PNOZmulti 2 series. Unlike traditional safety relays that perform only fixed functions, this device is a small, programmable safety PLC designed to replace multiple standard safety relays with a single, intelligent unit.

The PNOZ m B0 serves as the "base unit" of the PNOZmulti system, processing safety signals from various devices including:

• Emergency stop pushbuttons
• Safety gate limit switches
• Light beam devices and safety scanners
• Two-hand pushbuttons and enabling switches
• Operating mode selector switches

• Modular and Expandable: As a base unit, it supports connection of up to 6 expansion modules (inputs, outputs, or relays) and 1 link or communication module for fieldbus connectivity.
• Integrated Display and Controls: Features an on-board display for error messages and diagnostics, plus a rotary knob for menu control—no computer needed for basic status checking.
• Flexible I/O Configuration: Provides 20 digital inputs (up to 8 can be configured as standard outputs) and 4 safe semiconductor outputs (up to PL e / SIL CL 3).
• Test Pulse Outputs: The semiconductor outputs can be configured either as standard outputs or as test pulses for monitoring input circuits for shorts and cross faults.
• Exchangeable Program Memory: The base unit uses an exchangeable program memory, making it easy to transfer configurations to replacement units without reprogramming.
• Dual Power Supply: Separately powered: one supply for the system logic (U1) and one for the semiconductor outputs (U2), providing potential isolation.